You can also capture the current state of any preference. Use Navigate -> Open Setup -> User and click on the "Capture Preferences" toolbar button. This shows all instance scoped preferences and you can selectively choose which ones you want to capture as a preference task in the user.setup. Then you should be able to synchronize those with your account as well.

Your Eclipse.org account web page has a Storage tab and that lists the storage each application has stored there but it doesn't let you inspect what's stored. Only an application using the proper application token and your private credentials can access the storage. So no, you can't really use it without Eclipse...